Grade T2 Tool Steel (UNS T12002)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications

Introduction

Machining of tool steels into a usable product can be achieved through machine tools such as mills and lathes. The goal of machining tool steel is to produce a tool of the proper shape and the proper dimensions.

AISI T2 tool steel is an air-hardening medium alloy tool steel that has wear resistance intermediate between the high carbon chromium tool steels and oil hardening tool steels. But it offers good toughness and exhibits minimal distortion on hardening.

The data below will provide an overview of grade T2 tool steels.

Chemical Composition

The chemical composition of T2 tool steels is outlined in the following table.

Element Content (%)
Iron, Fe 91.55
Chromium, Cr 5.25
Molybdenum, Mo 1.1
Carbon, C 1
Manganese, Mn 0.85
Vanadium, V 0.25

Physical Properties

The following table shows the physical properties of T2 tool steels.

Properties Metric Imperial
Density 7.86 g/cm3 0.284 lb/in3

Mechanical Properties

The mechanical properties of T2 tool steels are displayed in the following table.

Properties Metric Imperial
Modulus of elasticity 207 GPa 30000 ksi
Hardness, Rockwell C 60-62 60-62
Hardness, Brinell 197-241 197-241
Charpy impact 53 J 39.1 ft.lb

Thermal Properties

The thermal properties of T2 tool steels are given in the following table

Properties Metric Imperial
Thermal expansion co-efficient (@20-260°C/68-500°F) 10.6 µm/m°C 5.89 µin/in°F

Applications

The following are the list of applications of T2 tool steels:

  • Turning and slotting tools
  • Broaching tools
  • Reamers
  • Threading dies
  • Twist drills
  • Tapes.

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